Blue Grass is a cover crop — grown to build and protect the soil rather than for a harvest of its own. It's hardy across USDA zones 5 through 10, shrugs off deer and shrugs off dry spells.
Zones
5-10
pH Range
5.5-8.4
Sun
Full Sun
Days to Maturity
---
Score Blue Grass on your exact land.
Zone averages can't see the slope, soil, frost, and sun that decide whether blue grass actually takes — and those shift from one yard to the next. Enter your address and we'll score blue grass against your land's real conditions.
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What Blue Grass is
Blue Grass grows as a perennial. It blooms yellow in mid summer. It's also deer-resistant.
How to grow Blue Grass
Blue Grass grows in USDA zones 5 through 10. Blue Grass does best in full sun — at least 6 hours of direct sun a day — and soil from pH 5.5 to 8.4, on well-drained to fast-draining ground. It needs a growing season of at least 150 frost-free days, which is why climate matters as much as soil.
USDA Zones
5-10
USDA PHZM 2023
Soil pH
5.5 - 8.4
USDA PLANTS Database
Sun
Full Sun
plant_species_v5.csv
Drainage
well (dry spells), excessive (dry/moderately dry)
plant_species_v5.csv
Frost Tolerance
41°F
plant_species_v5.csv
Frost-Free Days
150+
plant_species_v5.csv
Start the season right
Plant blue grass in full sun with at least 6 hours of direct sun, once the soil has warmed and frost risk has passed.
Match the soil
Blue Grass prefers pH 5.5 to 8.4 (USDA PLANTS Database). A quick soil test from your local Extension lab tells you whether to add lime or sulfur to land in band.
Water steadily
Keep the root zone evenly moist through establishment. A 2–3 inch mulch layer holds moisture without waterlogging.
Turn it in before it seeds
Cut blue grass down or turn it into the soil before it sets seed, while the growth is still green — that's when it returns the most to the ground.
Good to know
Good news for pet owners — blue grass isn't known to be toxic to dogs or cats. (Source: ASPCA.)
Blue Grass isn't classified as a notable pollinator plant in our data — pair it with high-value bloomers nearby to feed bees.
Where Blue Grass thrives
Blue Grass is hardy across USDA zones 5 through 10. Zone is only the starting point, though: the soil pH, drainage, and frost dates on your specific land decide how well it actually does.
Zones 5–10·Where Blue Grass growsOpen map →
On USDA hardiness-zone overlap, Blue Grass can grow in these states:
See if Blue Grass will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether blue grass actually takes — we score it against the real conditions at your address.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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Frequently Asked Questions
Can I grow Blue Grass in my zone?
Blue Grass grows in USDA hardiness zones 5 through 10 (USDA PHZM 2023). Zone is one factor — soil pH, drainage, and frost dates on your specific parcel also shape whether it takes.
When should you plant Blue Grass?
Most growers plant blue grass after the last spring frost, once the soil has warmed, leaving enough of the season for its 150-day frost-free need. Your local frost dates set the exact window — a Growable Ground report reads them for your address.
How much sun does Blue Grass need?
Blue Grass needs full sun — a spot that catches at least 6 hours of direct summer sun a day. In more shade it still grows, but usually gives a smaller, later crop. The catch is that a yard rarely gets even light everywhere — a fence, the house, or one tall tree can quietly take those hours. A Growable Ground report reads the real sun-hours across your land, canopy and buildings included, so you can pick the brightest bed before you plant.
What soil does Blue Grass need?
Blue Grass prefers soil pH 5.5 to 8.4, on well-drained to fast-draining ground (USDA PLANTS Database). Your report scores your parcel's actual soil against that using USDA SSURGO data.
Does Blue Grass attract pollinators?
Blue Grass isn't classified as a notable pollinator plant in our data. Pairing it with high-value bloomers nearby keeps bees and butterflies fed.
Is Blue Grass safe for pets?
Blue Grass is not known to be toxic to dogs or cats based on available data (ASPCA). Always supervise pets around new plantings.